unhealthy

adjective

un·​healthy ˌən-ˈhel-thē How to pronounce unhealthy (audio)
unhealthier; unhealthiest
1
: not conducive to health : not healthful
an unhealthy climate
unhealthy habits
unhealthy foods
2
: not in good health : sickly, diseased
unhealthy animals
3
a
: risky, unsound
an unhealthy economy
b
: of a harmful nature : bad, injurious
unhealthy levels of lead
c
: morally contaminated : corrupt, unwholesome
an unhealthy imagination
unhealthily adverb
unhealthiness noun

Examples of unhealthy in a Sentence

Her skin looks blotchy and unhealthy. Tests revealed an unhealthy level of lead in the water. Eating honey can be unhealthy for babies. He was stuck in an unhealthy relationship. She has an unhealthy interest in natural disasters.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
When air is stagnant, pollutants don't get dispersed, allowing ozone to build up to unhealthy levels. Joe Edwards, MSNBC Newsweek, 12 May 2025 The most common type is primary hypertension, which has no identifiable cause but can stem from a variety of factors like unhealthy lifestyle habits (e.g., physical inactivity or a high-salt diet), genetics, and aging. Colleen Doherty, Verywell Health, 12 May 2025 Don’t resist it — this is about breaking free from unhealthy patterns and establishing something productive and sustainable. Valerie Mesa, People.com, 12 May 2025 Veneration has almost developed into an unhealthy burden as much as an inspiring creed. Bennett Durando, Denver Post, 10 May 2025 See All Example Sentences for unhealthy

Word History

First Known Use

1595, in the meaning defined at sense 1

Time Traveler
The first known use of unhealthy was in 1595

Browse Nearby Words

Cite this Entry

“Unhealthy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unhealthy. Accessed 17 May. 2025.

Kids Definition

unhealthy

adjective
un·​healthy ˌən-ˈhel-thē How to pronounce unhealthy (audio)
1
: not conducive to good health : not healthful
an unhealthy climate
2
: not in good health : sickly, diseased
3
a
: risky, unsound
an unhealthy economy
b
unhealthily adverb
unhealthiness noun

Medical Definition

unhealthy

adjective
un·​healthy -ˈhel-thē How to pronounce unhealthy (audio)
unhealthier; unhealthiest
1
: not conducive to health
an unhealthy climate
2
: not in good health : sickly
unhealthiness noun

More from Merriam-Webster on unhealthy

Last Updated: - Updated example sentences
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